Bosch Rexroth | 4WEH16Y7X6EG24N9ETSK4B10
4WEH16Y7X/6EG24N9ETSK4/B10
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The 4WEH16Y7X/6EG24N9ETSK4/B10 directional spool valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth. It directs hydraulic flow in automated circuits and is sized NG16 to match medium-flow manifolds. Four service ports form a 4-way layout so the actuator can extend and retract through the same device. The valve uses a 2-position spring-end spool that shifts under pilot pressure and returns when the pilot is removed, enabling on-off control of cylinder motion. A subplate mounting interface simplifies replacement without disturbing pipework, while the porting pattern follows ISO 4401-07-07-0-05 to maintain interchangeability across brands. Internal supply and return of pilot oil remove the need for external lines, reducing plumbing complexity. The solenoid coil is designed for 24 V DC and terminates through a DIN EN 175301-803 type K4 connector, supporting standard industrial wiring practice. Main flow passages withstand operating pressures up to 280 bar so the unit can be installed in high-pressure power packs.
Pilot functions are rated for 250 bar maximum, and they remain controllable down to 14 bar in two-position service so the valve responds even on low-pressure startup. Return flow from the pilot stage is tolerated up to 210 bar, preventing false shifts in back-pressure conditions. The built-in supply control feature allows switching time adjustment, giving machine builders a way to fine-tune actuation speed. A throttle insert with a 1.0 mm orifice, identified as option B10, further damps the pilot flow to smooth spool movement. For manual actuation during setup, a concealed N9 override is provided that stays protected from accidental operation in service. The functional safety metric shows an MTTFd of 100 years, indicating long statistical life in continuous duty systems. Finally, all features are integrated into a compact assembly that attaches to common manifolds without additional accessories.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (2-position)
14 bar
Mounting Type
Subplate
Mttfd (type Weh)
100 Years
Pilot Oil Configuration
Internal Supply And Return
Pilot Return Pressure (internal)
210 bar
Porting Pattern
ISO 4401-07-07-0-05
Ports
4-Way
Rated Voltage
24 V DC
Size
NG16
Spool Configuration
2-Position Spring End
Switching Time Adjustment
Supply Control (S)
Throttle Insert
Ø1.0 mm (B10)
1620 Old Apex Road
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